Though Johnston -- whose son, Tripp, with Sarah Palin's daughter, Bristol, was born last December -- was expected to go full frontal during the shoot, a rep for Playgirl tells Usmagazine.com it never happened.

"Although Playgirl is ecstatic with the footage of the Levi Johnston shoot, and viewers are going to be pleased and surprised, Levi did not go completely full frontal, as was suggested by his camp a few weeks ago," Playgirl rep Daniel Nardicio told Us.

Johnston, 19, said on CBS' Early Show, "We don't want no bad boy image. I don't want to be looked at as someone who is getting naked for fame."

Johnston previously told Usmagazine.com, "I just get naked; that's what I do." But on the Early Show, he said, "I am not going to just get out there and get naked. I think when people see [the Playgirl spread], it's not going to be like what they think."